<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @click="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table 表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
            <template slot-scope="scope">
                <el-button type="primary" size="mini" icon="el-icon-edit"></el-button>
                <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
            </template>
        </el-table-column>
      </el-table>


      <!--分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'List',
  data () {
    return {
      // 获取列表数据的查询参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 查询获得的商品列表
      goodsList: [],
      // 总数据条目数
      total: 0
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    // 获取商品列表数据
    async getGoodsList () {
      const { data: res} = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取商品列表数据失败')
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 当每页显示的个数发生变化后会触发
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 当页码值发生变化后会触发
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 根据id删除商品
    async removeById (goodId) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
      }).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除')
      }

      const { data: res} = await this.$http.delete(`goods/${goodId}`)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败')
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    // 添加商品的方法
    goAddPage () {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>

</style>
